arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.06843cs.LGstat.ML
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不确定性下鲁棒系统辨识的贝叶斯微分规划

Bayesian differential programming for robust systems identification under uncertainty

University of Pennsylvania(宾夕法尼亚大学)

Yibo Yang, Mohamed Aziz Bhouri, Paris Perdikaris

摘要:

本文提出了一个机器学习框架,用于从噪声、稀疏和不规则的非线性动态系统的观测中识别贝叶斯系统。该方法利用微分编程的最新发展,通过常微分方程求解器传播梯度信息,并使用Hamilton Monte Carlo对未知模型参数进行贝叶斯推断。这使我们能够有效地推断后验分布与量化的不确定性的似是而非的模型,而稀疏促进先验的使用,使潜在的潜在动态的可解释的和简约的表示发现。一系列的数值研究表明,所提出的方法的有效性,包括非线性振子,捕食-食饵系统,混沌动力学和系统生物学。总之,我们的研究结果提出了一个新的,灵活的和强大的工作流程,数据驱动的模型发现下的不确定性。

英文摘要:

This paper presents a machine learning framework for Bayesian systems identification from noisy, sparse and irregular observations of nonlinear dynamical systems. The proposed method takes advantage of recent developments in differentiable programming to propagate gradient information through ordinary differential equation solvers and perform Bayesian inference with respect to unknown model parameters using Hamiltonian Monte Carlo. This allows us to efficiently infer posterior distributions over plausible models with quantified uncertainty, while the use of sparsity-promoting priors enables the discovery of interpretable and parsimonious representations for the underlying latent dynamics. A series of numerical studies is presented to demonstrate the effectiveness of the proposed methods including nonlinear oscillators, predator-prey systems, chaotic dynamics and systems biology. Taken all together, our findings put forth a novel, flexible and robust workflow for data-driven model discovery under uncertainty.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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